I have not had this surgery but did a little research on the web. I found an article indicating that the recovery time for this procedure is 6 months BUT I also found a testimonial from a patient who went through physical therapy following the procedure and was pain free and able to function well after 2 months.
I also found some medhelp threads on this subject - check out
http://www.medhelp.org/posts/show/426685. You might pm the two who had this surgery and see if you can get more information from them.